First things first - make TWO thumbprints next to each other, on a piece of white cardstock.
Then draw on embellishments to give it the look of a car and then trim down/add to a card front for easy mailing!!!
Use markers or scrapbook stickers to add phrases like "driving by to say..." or "wishing a speedy recovery!" to the front and to add a "punny" element!
Add little heart stickers towards the back of the car so it looks like "love" is coming out of the exhaust pipe.
Then gift away to the lucky receivers for them to enjoy your masterpieces!